#!/bin/sh

# Slackware build script for lapack95

# Written by Pablo Santamarķa (pablosantamaria@gmail.com)

PRGNAM=lapack95
VERSION=${VERSION:-3.0}	
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}	
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}	

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e # Exit on most errors

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM.tgz
cd LAPACK95
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# Copy the pre-configured make.inc file but put in the correct LIBDIR
sed "s%@LIBDIR@%/usr/lib${LIBDIRSUFFIX}%" $CWD/make.inc > make.inc

# Make single and double precision, complex and double complex 
# static library.
cd SRC
  make -j1 clean
  make -j1 OPTS0="$SLKCFLAGS" single_double_complex_dcomplex
cd ..

# Install lib 
mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}
cp $PRGNAM.a $PKG/usr/lib${LIBDIRSUFFIX}/lib$PRGNAM.a

# Install modules
mkdir -p $PKG/usr/include/lapack95
cp lapack95_modules/* $PKG/usr/include/lapack95

# Install config script
mkdir -p $PKG/usr/bin
sed "s%@VERSION@%$VERSION%" $CWD/lapack95-config > $PKG/usr/bin/lapack95-config
chmod 755 $PKG/usr/bin/lapack95-config

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}